Beginner Questions

Hi Guys, I have a few questions which I am hoping someone can help me with.

  1. Is there anything in general I should know before buying the DappNode?

  2. I have read it is better to Do I need a static IP address or anything from my ISP? ( I have read that it is better if router accepts incoming connections as it is positive in terms of networking and peering with every other nodes.) How do I check this? Which nodes do I need to open?

  3. Is there a common hurdle people come up against with DappNode?